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CS403 Midterm Past Paper online Practice Quiz

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January 17, 2022

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CS403 Midterm Past Paper

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Practice Quiz from CS403 Midterm Past Paper

This quiz will evaluate your preparation for the CS403 midterm examination and it is based on the past papers of CS403. The purpose of this quiz is to evaluate your performance in this subject. If you can pass this quiz, then there is a great chance that you can secure good marks in your exams.

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Created on January 17, 2022 By

faisal_faisi

CS403

CS403 Midterm Past Papers Practice Quiz

Welcome to CS403 Midterm Online Practice Quiz.

You can check your preparation of CS403 for your Exams here.

Questions Will be different every time you will attempt.

1 / 30

Category: CS403-mid

1. Select the correct statement about the ANSI/SPARC architecture

a. Any given database has many conceptual schemas and one physical schema, but it has only one external schemas.

b. The external level is not concerned with individual user perceptions, while the conceptual level is concerned with a community user perception.

c. The conceptual level is a level of indication between the internal level and the external level

d. The internal level in a database system will definitely be relational

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Category: CS403-mid

2. Select the correct statement among the following.

a. Partial participation which is also called existence dependency is displayed as a double line connecting the participating entity type to the relationship

b. Role names are not technically necessary in relationship types when all the participating entity types are distinct.

c. Cardinality ratios for binary relationship are displayed on Entity Relationship Diagrams by using a diamond shape notation

d. When different entity types participate only once in a single relationship type it is called a recursive relationship

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Category: CS403-mid

3. Structural constraints of a relationship type refer to

a. the role that a participating entity from the entity type plays in each relationship instance

b. whether the existence of an entity depends on it being related to another entity via the relationship type.

c. the constraints applicable in granting access to tables, columns and views in a database schema

d. identifying the owner entity type relevant to a given entity type

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Category: CS403-mid

4. Which of the following enforces a relation into 1st normal form?

a. Every non-key attribute is fully functionally dependent on primary key

b. non-key attribute is non-transitively dependent on primary key.

c. Every non-key attribute is partially dependent on super key

d. The domain of attribute must include only atomic values.

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Category: CS403-mid

5. Consider the relation Interview(CandidateNo, InterviewDate, InterviewTime, StaffNo, RoomNo) and the following functional dependencies.

FD1 : CandidateNo, InterviewDate -> InterviewTime, StaffNo, RoomNo FD2 : RoomNo, InterviewDate, InterviewTime -> StaffNo, CandidateNo FD3 : StaffNo, InterviewDate -> RoomNo Which of the following is correct?

a. The FD3 violates 3NF.

b. The relation Interview is in 3NF

c. The relation Interview is in BCNF.

d. The FD2 violates 2NF

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Category: CS403-mid

6. The ER- data model is an example of:

a. Physical database

b. Conceptual database

c. Relational database

d. Logical database

7 / 30

Category: CS403-mid

7. The Entity Relation Model models

a. Entities and Relationships

b. Entities

c. Entities, Relationships and Processes

d. Relationships

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Category: CS403-mid

8. Which of the following is true about relational schema?

a. Values are atomic

b. Contains only derived attributes

c. The sequence of columns is significant

d. The sequence of rows is significant

9 / 30

Category: CS403-mid

9. A description on a particular collection of data using the given data model

a. Relation

b. Database

c. None of the above

d. Schema

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Category: CS403-mid

10. A collection of concepts that can be used to describe the structure of a database

a. Data

b. Database

c. Data model

d. DBMS

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Category: CS403-mid

11. Which of the following is true for the relational model?

a. Complex key is a key consisting of more than one attribute.

b. Constraint is a rule that restricts the values in a database

c. Null value is a blank or zero value given to an attribute value when its value is inapplicable or its value is unknown.

d. Degree of a relation is the number of rows in a relation

12 / 30

Category: CS403-mid

12. Making a change to the conceptual schema of a database but not affecting the existing external schemas is an example of

a. Functional dependency

b. Logical data independence

c. Physical data independence

d. Concurrency control.

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Category: CS403-mid

13. Which of the following is true about NOT NULL constraint?

a. enforce domain integrity

b. limit the values that can be placed in a column.

c. enforces the uniqueness of the values in a set of columns

d. prevents any actions that would destroy links between tables with the corresponding data values

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Category: CS403-mid

14. As part of database naming conventions, attribute names should use suffixes such as ID, NUMBER or CODE for the _______.

a. primary key

b. foreign key

c. index

d. determinant

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Category: CS403-mid

15. Which of the following functions are NOT performed by a database administrator?

a. Establishing standards and procedures for database systems

b. Allocation of storage locations and data structures

c. Planning, designing and implementing database systems

d. Communicating with database users

16 / 30

Category: CS403-mid

16. Which of the following is NOT a feature of Context DFD?

a. sub-processes (which explain and decomposed the major process into small processes)

b. data flows linking the process to the sources and sinks (external entities)

c. all sources/sinks (external entities)

d. one process (which represents the entire system)

17 / 30

Category: CS403-mid

17. Which of the following is NOT a feature of Context DFD?

a. one process (which represents the entire system)

b. data flows linking the process to the sources and sinks (external entities)

c. all sources/sinks (external entities)

d. sub-processes (which explain and decomposed the major process into small processes)

18 / 30

Category: CS403-mid

18. Which of the following is a correct way to implement one-to-many relationship while designing tables?

a. as a single table and rarely as two tables with primary and foreign key relationships.

b. by splitting the data into two tables with primary key and foreign key relationships

c. using a junction table with the keys from both the tables forming the composite primary key of the junction table.

d. by splitting each table into three

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Category: CS403-mid

19. User rights information is stored in

a. Catalog

b. Logical database

c. Physical database

d. Buffer

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Category: CS403-mid

20. Which of the following constraints enforces entity integrity?

a. CHECK

b. NOT NULL

c. PRIMARY KEY

d. FOREIGN KEY

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Category: CS403-mid

21. A weak entity type

a. must have total participation in an identifying relationship

b. both (a) and (b)

c. does not have a key attribute(s)

d. none of the above

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Category: CS403-mid

22. Controlling redundancy in a database management system DOES NOT help to

a. avoid inconsistency among data

b. avoid duplication

c. avoid unnecessary wastage of storage space

d. avoid unauthorised access to data

23 / 30

Category: CS403-mid

23. Which of the following is not a benefit of normalization?

a. Minimize deletion anomolies

b. Minimize insertion anomolies

c. Maximize redundancy

d. Minimize updation anomolies

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Category: CS403-mid

24. In a conceptual model for a university, what type of relationship exists between Grade and Student entities?

a. 1:M

b. 1:1

c. Ternary

d. M:M

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Category: CS403-mid

25. Consider the following statements.
A. An entity integrity constraint states that no primary key value can be null.
B. A referential integrity constraint is specified between two relations.
C. A foreign key cannot be used to refer to its own relation.
Identify which of the above statements is/are correct

a. A and B

b. Only B

c. Only A

d. B and C

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Category: CS403-mid

26. Which of the following constraints enforces entity integrity?

a. CHECK

b. PRIMARY KEY

c. FOREIGN KEY

d. NOT NULL

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Category: CS403-mid

27. Identify the correct statement with respect to normalization

a. Normalization is a formal technique that can be used only at the starting phase of the database design

b. Normalization can be used as a top-down standalone database design technique

c. The process of normalization through decomposition must achieve the dependency reservation property at any cost whereas the lossless join property is sometimes sacrificed.

d. The process of normalization through decomposition must achieve the lossless join property at any cost whereas the dependency reservation property is sometimes sacrificed.

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Category: CS403-mid

28. Which of the following is a feature of PRIMARY KEY constraint?

a. limit the values that can be placed in a column

b. allow any actions that would destroy links between tables

c. enforces that the column will only accept null values.

d. unique identifier for a row within a database table

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Category: CS403-mid

29. A collection of related data is

a. Database

b. Logical model

c. Relational model

d. Data

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Category: CS403-mid

30. Which of the following concepts is applicable with respect to 2NF?

a. Non-transitive dependency

b. Transitive dependency

c. Full functional dependency

d. Any kind of dependency

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Note before downloading CS403 midterm past paper

One thing to note dear fellows that you must don’t rely on these papers only. They can be a source of help but not an ultimate solution. If you want to get good marks in your exams you are advised to go through all of your handouts and must watch all of the video lectures.